Stove-pipe damper



(No Model.)

G. W. WARNER.

STOVE PIPE DAMPER. No. 364,322. Patented June 7, 1887.

N, PEYEHS. Phumuthogq her, Wishingfln, D. Q

* UNITED STATES PATENT OFFICE.

GEORGE XVARNER, OF FREEPORT, ILLINOIS.

STOVE-PIPE DAMPER.

SPECIFICATION forming part of Letters Patent No. 364,322, dated June 7, 1887.

' Application filed Jilly 1, 1886. Serial No. 206,885. (No model.) I

To all whom it may concern:

Bait known that I, GEORGE W. \VARNER, residing at Freeport, in the county of Stephenson and State of Illinois, and a citizen of the United States, have invented a new and useful Improvement in Stove-Pipe Dampers, of which the following is a full description, reference being had to the accompanying drawings, in which- Figure 1 is a sectional elevation of a piece of the stove-pipewith the damper in position therein; Fig. 2, a perspective view of the damper-handle; Fig. 3, a perspective view of the damper having a slot of the form shown for the spindle of the handle of Fig. 2; Fig. 4, a modification in the construction of the handle-arms; Fig. 5, another modification in the form of construction of the handle-arms.

Th1s invention relates to that class of stovepipe dampers which are provided with detachable handles.

In the drawings, A represents the handle as an entirety. As shown in Fig. 2, the handle 1s formed of two correspondingly-shaped arms, and is made of malleable iron or other suitable material. Each arm has an outer or head portion, a, and aninner or spindle portion, a, and is provided at thejuncture of the spindle with the head with a groove, a, to receive the edge of the pipe. The outer or head portion, a, is scalloped and notched, as shown in Fig. 2, for ornamentation, and the spindle portion a is triangular, the two spindles when together forming asquare, or nearly so, and the outer portion or hcad,a, of each arm stands out from the spindle portion,so as to leave between the two outer ends a space 'for the re ception of the coiled spring. As shown in Fig. 4, the arms for the handle A are made of wire or other suitable material bent into any desired shape, so as to have a head or outer portion, a, and spindle portion aand a groove,

a, to receive the edge of the pipe, the outer portion being spread apart to receive the coiled spring. As shown in Fig. 5, each arm of the handle A has a circular or curved outer end, a,a spindle portion,a,and a bearing-face, a, the outer ends being spread apart for the reception of the coiled spring, and it is obvious that various modifications in the construction of the handle can be used, so long as the arms which form the handle each have an outer or head portion, a spindle, and a bearing.

B is a coiled spring located between the outer ends of the arms of the handle A, the ends of the spring fitting over a pin or pintle, b, on the inner face of each outer end, a, as shown in Figs. 2, 4t, and 5, the pins or pintles holding the spring in place. As shown in Figs. 2 and 5, the pins or pintles b are each cast or formed with the outer end, a, and as shown in Fig. 4 the pin or pintle is formed by bending the wire inward.

O is a damper,which may be of any of the usual and well-known forms adapted to fit the pipe and having a pin or pintle, c, to enter a hole in the pipe and support the damper on one side, the opposite side of the damper being supported by the handle A.

D is a slot formed in the body of the damper and having 011 one side at the ends of the slot bridges (Z and on the opposite side midway of the length of the slot a bridge, (1, the bridges forming a correspondingly-shaped receptacle to the shape of the spindles awhen together, so that the spindle can be forced into the slot D, and be held by the bridges d d to turn the damper, and when the damper is in place and the handle inserted thebearing a is in line with the edge of the stove-pipe, so that when the outcr'end of the handle is forced apart by the action of the coiled spring B the bearing a will receive the edge of thepipe,and a fric' tional contact will be produced between the pipe and handle, by which the damper will be held when adjusted in any desired position.

In use the damper is placed in the pipe E with the pintle c inserted in the hole therefor in the pipe, and the slot D is brought in line with the hole in the pipe for the passage of the spindles a of the handle A,and these spindles are slipped into position in the slot and held by the bridges (Z d, and the coiled spring is then placed between the ends of the heads a, forcing the heads apart, the ends of the spring receiving the pins or pintles b and holding the spring in place, andthe action of the spring forces the outer ends of the arms of the handle A apart, making the necessary frictional contact with the stove pipe for holding the damper in position. The coiled spring, being a slow conductor of heat, enables the handle to be grasped to turn the damper without as much liability of burning as where a handle of ordinary construction is used, and by' using a coiled spring, which forces the outer ends of the handle outward, it will be seen that as the bearing a becomes worn in use the spring Will maintain the necessary frictional contact by forcing the handlearms apart to compensate for the wear in use.

The bearing-face a, formed by the groove or the rounded surface, impinges against the edge of the pipe around the handle-opening with sufficient force to prevent withdrawal of the handle in use; but at the same time the handle can be withdrawn by removing the coiled spring or pressing the ends a of the handle in- W ward to relieve the contact of the bearing a with the pipc-cdge spindle portion a, triangular in cross-section, 25 and the grooved bearing a, and a spring, B,

located between the enlarged head portions of said handle, substantially as shown and described.

GEORGE W. WARNER Witnesses:

ALBERT H. Animus, HARRY 'l. J oNEs. 

